Camshaft with beölbare by pressure oil adjustable cam

The present invention relates to an adjustable camshaft (1) for the valve gear of an internal combustion engine having an outer shaft (10) on which at least a first cam is arranged (11) and connected thereto rotationally fixed manner, and extending with a through the outer shaft (10) the inner shaft (12) is connected to the at least one second cam (13) rotationally fixed, with the with the inner shaft (12) rotationally connected to second cam (13) has a cam bore (14) and at a set point (15) on the outer shaft ( 10) is rotatably mounted. According to the invention it is provided that at the set point (15) in the outer shaft (10) and / or in the inner wall of the cam bore (14) at least one oil groove (16, 17, 18, 19, 20, 20 ', 21) is introduced, is guided into the oil from a gap (25) between the outer shaft (10) and the inner shaft (12) extending through at least one through the outer shaft (10) passage (22, 23, 24).